Search results for "Signal variability"

showing 2 items of 2 documents

2019

Aposematic organisms couple conspicuous warning signals with a secondary defense to deter predators from attacking. Novel signals of aposematic prey are expected to be selected against due to positive frequency-dependent selection. How, then, can novel phenotypes persist after they arise, and why do so many aposematic species exhibit intrapopulation signal variability? Using a polytypic poison frog ( Dendrobates tinctorius ), we explored the forces of selection on variable aposematic signals using 2 phenotypically distinct (white, yellow) populations. Contrary to expectations, local phenotype was not always better protected compared to novel phenotypes in either population; in the white po…

0106 biological sciences0303 health scienceseducation.field_of_studyMultidisciplinaryDendrobatesFrequency-dependent selectionPopulationZoologyAposematismBiologybiology.organism_classification010603 evolutionary biology01 natural sciencesPredationGene flowWhite (mutation)03 medical and health sciencesSignal variabilityeducation030304 developmental biologyProceedings of the National Academy of Sciences
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Back to Pupillometry: How Cortical Network State Fluctuations Tracked by Pupil Dynamics Could Explain Neural Signal Variability in Human Cognitive Ne…

2017

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OpinionCognitive Neuroscience1Cognitive neuroscienceBiologyStimulus (physiology)PupilCognitionddc:570Neural PathwaysPupillary responsemedicineAnimalsHumansnetwork state changesCerebral CortexGeneral NeurosciencepupillometryInformation processingPupilGeneral MedicineHuman brainpupil diameter1.11medicine.anatomical_structureCognition and BehaviorSignal variabilitysense organsNeurosciencePupillometryeNeuro
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